What should I do about an ulcer at the corner of my mouth?

Angular cheilitis (cracks or ulcers at the corners of the mouth) is a relatively common condition in daily life. In severe cases, it may interfere with normal eating. So, what should one do about angular cheilitis?

What to Do for Angular Cheilitis

For angular cheilitis, apply lip balm locally to the affected corners of the mouth. Avoid excessively opening the mouth during speaking, eating, or yawning to prevent further fissuring. Increase intake of foods rich in vitamin B and vitamin C, such as fresh vegetables and fruits, lean meats, nuts, and carrots.

Additionally, consider taking effervescent vitamin C tablets, vitamin B6 tablets, and vitamin B12 tablets. You may also apply watermelon frost powder directly to the ulcerated area at the corner of the mouth, or crush a vitamin C tablet into powder and apply it topically. If secondary bacterial infection occurs—manifesting as redness and erosion at the corner of the mouth—apply erythromycin ointment to reduce inflammation. Patients with oral ulcers should consume bland, soft foods and avoid spicy, irritating, or excessively hot foods, which could directly irritate the affected area and impede ulcer healing.

The primary treatment strategies for oral ulcers focus on local anti-inflammatory action, pain relief, and promotion of ulcer healing. Angular cheilitis refers specifically to oral ulcers occurring at the corners of the mouth. Its exact pathogenesis remains unclear but is generally associated with dietary factors, trauma, infection, and autoimmune mechanisms. We hope this information proves helpful!